A special dye used as color former for heat sensitive recording paper or pressure-sensitive carbon paper is called heat and pressure sensitive dyes. With the development of science and technology, especially the modernization of scientific and technological information and the widespread use of computers and fax machines, the amount of heat sensitive recording paper and pressure sensitive carbon paper is increasing. Therefore, more and more attention has been paid to the research and development of heat and pressure sensitive dyes.
Figure 1. Molecular structure of PH-1.
Figure 2. Molecular structure of F-6.
Figure 3. Molecular structure of phenothiazine heat and pressure sensitive dye.
Figure 4. An example of other heat and pressure sensitive dye.
Micro-Nano Electric Materials
Organic and Printed Electronics
Photonic and Optical Materials